Lighter, more compact with increased power across the entire rev range, the powerful 450cc engine maintains the previous YZF450FX model’s exceptional pulling power and renowned ease-of-use, with ECU settings tailored to enhance low-end tractability and a 500 rpm higher rev limit for even more top-end power.
Review – Key Features – Features & Benefits – Specifications
2025 Yamaha YZ450FX: CRAFTED FOR YOUR NEXT OFF-ROAD ADVENTURE.
Introducing the new 2025 Yamaha YZ450FX…
The premier XC racer built to compete straight out of the box, the YZ450FX takes off‑road performance to the next level. Featuring even more power, better handling, and less weight with improved ergonomics and next-generation Power Tuner app, the YZ450FX is ready to make fast riders even faster!
THE LIGHTER, SLIMMER, FASTER WOODS RACER
The premier XC racer built to compete straight out of the box, the all-new YZ450FX takes off‑road performance to the next level.
2025 Yamaha YZ450FX Totalmotorcycle.com Key Features
- 450cc engine is lighter and more compact with increased power across the entire rev range, while increasing the rev limit by 500 rpm for even more top-end power.
- A completely redesigned aluminum bilateral beam frame provides just the right amount of strength and flex for the perfect balance of stability and cornering performance
- Yamaha’s groundbreaking Power Tuner App is revised with more features and designed to be even more user-friendly
- The Traction Control System communicates wheel slip to the ECU, tuning the engine to maintain ideal rear wheel traction
- A compact, lightweight, and durable clutch air intake
- All-New 450cc Four-Stroke Engine
- All-New Aluminum Bilateral Beam Frame
- New Yamaha Power Tuner App
- New Traction Control & Updated Launch Control
- New Compact Lightweight Clutch
- New Air Intake
- Updated Rear Brake
- Revised Suspension with Toolless Fork Adjustment
- Slimmer Body & Improved Ergonomics
- Electric starting and lithium ion battery
- Handlebar-mounted fuel map selector switch
Lighter, more compact with increased power across the entire rev range, the powerful 450cc engine maintains the previous YZF450FX model’s exceptional pulling power and renowned ease-of-use, with ECU settings tailored to enhance low-end tractability and a 500 rpm higher rev limit for even more top-end power.
The advanced aluminum bilateral beam frame with YZ450FX-specific engine mounts provides just the right amount of strength and flex for the perfect balance of straight-line stability and cornering performance. The result is a better handling machine with lighter feel, more agility and increased traction, allowing the rider to tackle tight, technical trail sections with greater confidence.
Like having factory team support in your pocket, Yamaha’s groundbreaking next-generation Power Tuner App is even more user-friendly with an intuitive “Simple Tuning” slide bar for quick engine mapping, three-level Traction Control, a lap timer, and helpful engine and suspension tuning guides. Best of all, it’s free-of-charge.
2025 Yamaha YZ450FX Totalmotorcycle.com Features and Benefits
ENGINE
All-New 450cc Four-Stroke Engine
Lighter, more compact with increased power across the entire rev range, the all-new 450cc engine maintains the YZ450F’s exceptional pulling power and renowned ease-of-use, all while boosting the rev limit by 500 rpm for even more top-end power.
New Yamaha Power Tuner App
Like having factory team support in your pocket, Yamaha’s groundbreaking Power Tuner App is revised to be even more user-friendly. New features include an intuitive “Simple Tuning” slide bar for engine mapping, Traction and Launch Control tuning, lap timer, along with engine and suspension tuning guides.
New Traction Control & Updated Launch Control
The all-new Traction Control System communicates wheel slip to the ECU, tuning the engine to maintain ideal rear wheel traction. Three levels can be selected: HIGH, LOW or OFF. The updated Launch Control System now features an rpm limiter which can be adjusted in 500 rpm increments between 6,000 rpm and 11,000 rpm for optimized launches when the gate drops. Both systems are controlled through the Yamaha Power Tuner App.
New Compact Lightweight Clutch
The all-new clutch design replaces the coil springs of the previous model with a new disc spring and integrates primary gear and basket into a single steel unit. The result is a more compact, lightweight and durable assembly which yields smoother engagement and excellent feel. A new clutch cover employs a stylish geometric design that helps minimize scratching and lends a premium look.
New Air Intake
Optimized intake path draws air from under the side covers and seat allowing for a lighter, slimmer and more compact shroud area. This redesign allows the airbox cover to be lower and more narrow and radiator shrouds to be slimmer.
CHASSIS
All-New Aluminum Bilateral Beam Frame
A completely redesigned aluminum bilateral beam frame provides just the right amount of strength and flex for the perfect balance of stability and cornering performance. The result is a better handling machine with lighter feel, more agility and increased traction allowing the rider to enter corners with greater confidence and more line choices.
New Compact Lightweight Clutch
The all-new clutch design replaces the coil springs of the previous model with a new disc spring and integrates primary gear and basket into a single steel unit. The result is a more compact, lightweight and durable assembly which yields smoother engagement and excellent feel. A new clutch cover employs a stylish geometric design that helps minimize scratching and lends a premium look.
Slimmer Body & Improved Ergonomics
A new slimmer, flatter and more compact body eases rider movement for improved control, including more seamless, rounded features from seat edges and side covers to a more narrow fuel tank and front shroud. The rider triangle is also improved with increased legroom between the seat and footpegs, and revised handlebar position for a more natural posture and enhanced rider comfort.
Updated Rear Brake
Rear brake feel is improved by reducing the rigidity of the brake hose, providing a wider range of control at the pedal.
Revised Suspension with Toolless Fork Adjustment
The YZ450F’s front fork now features a new hand operated compression clicker for simple, toolless adjustments. To match the new chassis, front fork and rear shock damping characteristics are tuned to optimize traction and bump absorption.
ADDITIONAL FEATURES
XC-Focused Details
The YZ450FX includes a range of cross-country-specific upgrades compared to the YZ450F motocrosser including a composite engine guard, 18-inch rear wheel, sealed O-ring chain, fuel level warning indicator and a folding aluminum kickstand.
Adjustable Handlebar Mounts
The 4-position adjustable handlebar clamps are rubber mounted to improve comfort, reduce handlebar vibration and allow riders to adjust the bar position while the oversize 1-1/8-inch handlebar is strong but lightweight.
Embedded Graphics
Yamaha’s unique embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage.
2025 Yamaha YZ450FX – Totalmotorcycle.com USA Specifications/Technical Details
US MSRP Price: $10.199 USD
Canada MSRP Price: $12,199 CDN
Europe/UK MSRP Price: £ NA GBP (On The Road inc 20% Vat)
ENGINE
| Engine Type | 450cc liquid-cooled DOHC 4-stroke; 4 titanium valves |
| Bore x Stroke | 97.0mm × 60.9mm |
| Compression Ratio | 13.0:1 |
| Fuel Delivery | Mikuni® fuel injection, 44mm |
| Transmission | 5-speed; multiplate wet clutch |
| Final Drive | Chain |
| Fuel Capacity | 2.1 gal |
CHASSIS
| Suspension/Front | KYB® spring-type fork with speed sensitive damping; fully adjustable, 11.8-in travel |
| Suspension/Rear | KYB® single shock; fully adjustable, 12.0-in travel |
| Brakes/Front | Hydraulic disc, 270mm |
| Brakes/Rear | Hydraulic disc, 240mm |
| Tires/Front | 80/100-21 Dunlop® Geomax MX33F |
| Tires/Rear | 120/90-18 Dunlop® Geomax MX33 |
DIMENSIONS
| LxWxH | 85.4 in x 32.5 in x 49.8 in |
| Seat Height | 37.6 in |
| Wheelbase | 57.9 in |
| Rake (Caster Angle) | 27° |
| Trail | 4.8 in |
| Max. Ground Clearance | 13.0 in |
| Fuel Capacity | 2.1 gal |
| Wet Weight*** | 251 lbs |
OTHER
| Warranty | 30 Day (Limited Factory Warranty) |
*Manufacturer’s Suggested Retail Price (MSRP) shown. Does not include tax, title, prep or destination charges. Actual prices set by dealer.
**Fuel Economy is estimated.
***Wet weight includes the vehicle with all standard equipment and all fluids, including oil, coolant (as applicable) and a full tank of fuel. It does not include the weight of options or accessories. Wet weight is useful in making real-world comparisons with other models.
2025 Yamaha YZ450FX – Totalmotorcycle.com Canada Specifications/Technical Details
ENGINE Liquid-cooled, DOHC, 4-valve (titanium), single
DISPLACEMENT 450 cc
BORE AND STROKE 97 x 60.8 mm
COMPRESSION RATIO 13.0:1
FUEL DELIVERY Mikuni 44 mm throttle body F.I.
LUBRICATION Wet sump
IGNITION / STARTING TCI / Electric
TRANSMISSION Constant mesh, 5-speed
FINAL DRIVE Chain
CHASSIS
SUSPENSION (FRONT) Fully adjustable 48 mm inverted KYB fork / 300 mm (11.8 in.) wheel travel
SUSPENSION (REAR) Fully adjustable linkage-type / 305 mm (12.0 in.) wheel travel
BRAKES (FRONT) 270 mm, floating disc / twin-piston caliper
BRAKES (REAR) 240 mm, disc / single-piston caliper
TIRES (FRONT) 80/100-21
TIRES (REAR) 120/90-18
CRITICAL DATA
LENGTH 2,169 mm (85.4 in.)
WIDTH 825 mm (32.5 in.)
HEIGHT 1,265 mm (49.8 in.)
WHEELBASE 1,471 mm (57.9 in.)
GROUND CLEARANCE 330 mm (13.0 in.)
SEAT HEIGHT 955 mm (37.6 in.)
FUEL CAPACITY 7.95 litres (2.1 Imp. gal.)
WET WEIGHT 113.9 kg (251 lb)
COLOUR(S) Team Yamaha Blue
2025 Yamaha YZ450FX – Totalmotorcycle.com European Specifications/Technical Details
NA
Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).
